tree f932f781b65576fb18882c3261d2d964fb1fc48f
parent a4d0b112b9fa4744122785be18f0dfecaf002bba
author Vladislav Kaznacheev <kaznacheev@google.com> 1515193709 -0800
committer Vladislav Kaznacheev <kaznacheev@google.com> 1516839747 -0800

Implement selection by hover in popup menus.

Porting hover handling from the platform version of DropDownListView
(added in ag/761550).

This solution only works on O or later because it relies on the system
being not in touch mode, and mouse events used to enter touch mode
before O.

Bug: 36075253
Bug: 37660840
Test: android.support.v7.widget.PopupMenuTest
Change-Id: If3fbae15b424412012a7c5216b8dc354258b7ae3